BEAVER CREEK, Colo.—Rescue teams looking for a woman who disappeared while horseback riding on Beaver Creek Mountain were unable to find her Saturday.

They planned to resume the search Sunday.

The Eagle County sheriff’s office said the 56-year-old from Lincoln, Neb., fell into Beaver Creek after her horse lost its footing Friday evening.

The horse was found downstream with minor injuries.

The woman was on a ride with an outfitter on her way with her family to Beano’s Cabin, an upscale restaurant on the mountain. Diners can only reach the restaurant on horseback or horse-drawn wagon, sleighs or wagons pulled by tractors.

Officials haven’t said which area of the creek the woman fell into. The creek is narrow and shallow in some spots but other areas have swift-moving water fed by melting snow.

Two search and rescue dogs, two water rescue teams, a team on horseback, and a National Guard helicopter pilot helped with the search.

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